Conical Microstructure Flexible High-Sensitivity Sensing Unit Adopting Chemical Corrosion

Area of Science:

• Materials Science
• Electrical Engineering
• Biomedical Engineering

Background:

• Addresses challenges in sensor technology for human-computer interaction, 5G communication, and medical detection, including poor sensitivity, stability, and wearability.
• Highlights the need for advanced flexible sensors capable of conforming to curved surfaces and withstanding mechanical stress.

Discussion:

• Presents a novel sensing unit with a microstructured flexible front end, featuring cone-like structures (18-22 μm) densely packed at 2500 units/mm².
• Details the sensor's performance, including a sensitivity of 0.6 KPa⁻¹ (compared to 0.15 KPa⁻¹ without microstructure), rapid response time (<600 ms), and stability over 400 stretching cycles (50% tensile conductivity).

Key Insights:

• The flexible sensor exhibits excellent performance on mechanical devices, human body surfaces, and in non-contact testing scenarios.
• Demonstrates significant improvements in sensitivity and stability compared to conventional sensor designs.

Outlook:

• The developed microstructured flexible sensor shows potential for widespread application across various testing environments.
• The innovative manufacturing process offers new methodologies for the advancement of flexible sensor technology.